Black Arowana vs. Silver Arowana: Which Is the Better Choice?

When it comes to choosing the perfect fish for your aquarium, the decision can be tough, especially with options like the black arowana vs. silver arowana. Both are mesmerizing fish species, known for their beauty and unique traits, but which one is the right fit for you? In this article, we’ll explore the differences and similarities between black arowanas and silver arowanas to help you make an informed choice.

What Are Black Arowanas and Silver Arowanas?

Before we get into the nitty-gritty of comparing them, it’s helpful to understand what black arowanas and silver arowanas are.

• Black Arowana (Osteoglossum ferreirai): Native to the waters of the Amazon Basin, black arowanas are known for their sleek, dark-colored bodies. When young, they sport a striking black and silver pattern. As they mature, the black gradually fades, but they retain a darker overall appearance compared to their silver cousins.
• Silver Arowana (Osteoglossum bicirrhosum): Also originating from South America, particularly the Amazon River, silver arowanas have a more familiar metallic look. They are easily recognized by their long, streamlined bodies and shimmering scales, which catch the light beautifully as they swim.

Now that you know what they are, let’s compare them head-to-head in several categories to help you figure out which one suits you better.

Appearance: The First Thing You’ll Notice

If you’re looking for a striking display, the first thing you’ll notice is their color. As the names suggest, the black arowana starts off with a dark, almost mysterious look, while the silver arowana shines bright like a swimming bar of silver.

Black Arowana Appearance

• Juvenile Stage: Young black arowanas have a captivating black-and-silver pattern with golden highlights. Their fins are edged in a deep black that makes them stand out.
• Adult Stage: As they grow, the dark coloration fades somewhat, but they maintain a shadowy appearance, especially under dim lighting.

Silver Arowana Appearance

• Juvenile to Adult: The silver arowana stays consistent throughout its life, with its scales appearing like silver mirrors. The long, ribbon-like fins flutter elegantly as they swim.

Which one wins in appearance? It all boils down to personal taste. If you like a fish that looks a little mysterious, go with the black arowana. If you prefer a fish that sparkles and catches the light, the silver arowana might just steal your heart.

Size Matters: How Big Do They Get?

Both fish can grow pretty large, and you’ll need a big tank to accommodate them.

• Black Arowana: Usually grows to about 30 inches (75 cm) in captivity, though some may exceed that in the wild. They tend to stay a little smaller than their silver counterparts.
• Silver Arowana: These guys can reach up to 36 inches (90 cm) or more, making them one of the larger freshwater fish commonly kept in home aquariums. Some have even been reported to grow over 4 feet (120 cm) in exceptional cases.

So, if space is an issue, the black arowana might be slightly more manageable. However, when it comes down to it, both will need a large tank—at least 250 gallons for adult fish.

Tank Requirements: Setting Up Their Home

Speaking of tanks, let’s chat about what kind of environment you’ll need for these fish. They’re both from South America, so their needs are quite similar, but there are some slight differences worth noting.

Water Conditions

• Black Arowana: Prefers a temperature between 75°F and 82°F (24°C to 28°C) and slightly acidic to neutral pH levels (around 6.0 to 7.0). They are generally a bit more adaptable when it comes to water parameters.
• Silver Arowana: Likes a temperature range of 75°F to 86°F (24°C to 30°C) and pH levels around 6.5 to 7.5. They’re a bit more sensitive to water quality, so regular water changes are crucial.

Tank Setup

• Tank Size: As mentioned earlier, both need large tanks. A 250-gallon tank is the minimum recommended for a single adult.
• Décor: Both prefer open swimming spaces, but adding some driftwood and aquatic plants can help mimic their natural environment. Just don’t go overboard—these fish are jumpers, and they need space to swim.
• Tank Lid: Make sure the lid is secure. These fish are known to jump out of tanks if startled, and they can jump surprisingly high.

Personality and Behavior: What’s Their Temperament Like?

Let’s be real here—you don’t want a fish that’s going to stress you out by being overly aggressive, right? Both black and silver arowanas have unique personalities that can affect how they interact with you and other tank mates.

Black Arowana Behavior

• Less Aggressive: Black arowanas are generally considered less aggressive than silver arowanas, especially when young. They still have a predatory nature, but they are more likely to tolerate other fish if introduced at a young age.
• Shyer Personality: They can be a bit shy, especially when they’re smaller, and may take a little while to warm up to their environment.

Silver Arowana Behavior

• More Aggressive: Silver arowanas tend to be more territorial, especially as they get larger. They’re not the best choice if you’re planning a community tank.
• Bold and Interactive: On the flip side, silver arowanas are often bolder and more interactive with their owners. You might even notice them watching you as you move around the room—just don’t take it personally if they occasionally snap at your fingers during feeding time!

Diet: What Do They Eat?

Feeding an arowana can be fun, but it can also be a little challenging since these fish are natural carnivores.

• Black Arowana Diet: Prefers smaller live foods when young, such as insects and small fish. As they mature, they can eat larger prey like shrimp and even small frogs. It’s best to vary their diet to include high-quality pellets for balanced nutrition.
• Silver Arowana Diet: Similar to the black arowana, but they have a bigger appetite. They’ll readily take live food, frozen food, and pellets. They’re not picky eaters, but remember not to overfeed—these fish can become obese if their diet isn’t managed properly.

Price: How Much Do They Cost?

Let’s talk dollars for a second because, let’s face it, budget matters.

• Black Arowana: Generally more expensive than silver arowanas. You can expect to pay anywhere from $100 to $400 depending on size and rarity.
• Silver Arowana: More budget-friendly, often ranging from $20 to $150, depending on the fish’s size. They’re more commonly available, which makes them less expensive.

Lifespan: How Long Will They Be Around?

Both black and silver arowanas have a long lifespan if well cared for.

• Black Arowana: Can live for 15 to 20 years in captivity.
• Silver Arowana: May live 10 to 15 years, though some have been known to reach the 20-year mark with excellent care.

Compatibility with Tank Mates: Can They Share Their Space?

Choosing tank mates for these large, carnivorous fish can be tricky.

• Black Arowana: More likely to coexist with other large fish species if introduced early. Ideal tank mates might include large catfish, oscars, or peacock bass.
• Silver Arowana: Due to their more aggressive nature, tank mates should be chosen carefully. They’re more likely to bully smaller fish or compete aggressively for food.

Final Verdict: Black Arowana vs. Silver Arowana – Which Is Right for You?

Now that you’ve seen the black arowana vs. silver arowana showdown, it’s time to make a decision. Here’s a quick recap:

Go for the Black Arowana if:

• You prefer a slightly smaller fish.
• You want a less aggressive personality.
• You like the darker, more mysterious appearance.

Choose the Silver Arowana if:

• You have space for a larger fish.
• You want a bolder, more interactive fish.
• You love that shiny, metallic look.

Whichever you choose, remember that both species are incredible creatures that require commitment. Make sure you’re ready to provide a large enough tank, proper care, and, of course, a secure lid to prevent any escape attempts. If you do, you’ll be rewarded with a truly majestic fish that’s sure to be the crown jewel of your aquarium.

Pro Tip: When shopping for arowanas, make sure to buy from a reputable dealer. Avoid fish that look sickly, have dull scales, or show signs of fin damage. A healthy arowana will be active, alert, and have vibrant colors.

In conclusion, when comparing black arowana vs. silver arowana, the choice boils down to your personal preferences and your ability to meet their needs. Both are stunning in their own way and will make your aquarium the talk of the town!

Got questions? Ask away, and happy fishkeeping!